Re: [PATCH 1/7] elfutils: fix builds with gcc 4.6

[Khem Raj <raj.khem@gmail.com>]

On 4/4/2011 6:58 PM, Khem Raj wrote:
> On 4/1/2011 6:51 AM, Joshua Lock wrote:
>> From: Joshua Lock<josh@linux.intel.com>
>>
>> gcc 4.6 (as used in Fedora 15) adds some extra warnings which are
>> included with Werror. The new unused-but-set variable warning causes
>> an error in libasm of elfutils. Work around this by removing
>> unused-but-set from Werror.
>>
>> Signed-off-by: Joshua Lock<josh@linux.intel.com>
>> ---
>> meta/recipes-devtools/elfutils/elfutils_0.148.bb | 4 ++++
>> 1 files changed, 4 insertions(+), 0 deletions(-)
>>
>> diff --git a/meta/recipes-devtools/elfutils/elfutils_0.148.bb
>> b/meta/recipes-devtools/elfutils/elfutils_0.148.bb
>> index b2f700e..c395be8 100644
>> --- a/meta/recipes-devtools/elfutils/elfutils_0.148.bb
>> +++ b/meta/recipes-devtools/elfutils/elfutils_0.148.bb
>> @@ -40,6 +40,10 @@ SRC_URI += "\
>>
>> inherit autotools
>>
>> +# GCC 4.6.0 raises an unused-but-set warning in libasm, for now remove
>> +# this warning from Werror
>> +CFLAGS_virtclass-native += "-Wno-error=unused-but-set-variable"
>> +
>
> unused-but-set-variable is a new option in gcc 4.6 which means this will
> cause problems with older gcc's as they wont recognize this option and
> not all distros have gcc 4.6
> as base compiler. Have you tried compiling this patchset on a build
> machine which has older gcc ? say 4.5
>

may be this patch would help to get rid of using this option
https://fedorahosted.org/pipermail/elfutils-devel/attachments/20110401/d91b26be/attachment.bin


>> EXTRA_OECONF = "--program-prefix=eu-"
>>
>> do_configure_prepend() {
>